package com.wc.blue_bridge_history.Java14C.A_求和;

/**
 * @Author congge
 * @Date 2024/3/28 9:20
 * @description https://www.lanqiao.cn/paper/3873/problem/3493/
 */
public class Main {
    public static void main(String[] args) {
        long s = 0;
        for (int i = 1; i <= 20230408; i++) {
            s += i;
        }
        System.out.println(s);
    }
}
